Energy Flow (AP BIO)

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What is a niche?

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The fundamental niche comprises all the abiotic conditions under which a species could survive when adverse biotic conditions are absent.

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What does species richness refer to?

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Species richness refers to the various species found within a community.

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What are species composition and diversity?

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Communities can be described by their species composition and diversity.

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What is a biological community made up of?

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A biological community is made up of many populations of interacting species.

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What does it mean to fix nitrogen in an ecosystem?

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Fixing nitrogen means converting nitrogen gas from the atmosphere into ammonium, which can be used by plants.

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What is the role of producers in an ecosystem?

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Producers, such as plants, convert solar energy into chemical energy through photosynthesis.

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What is the difference between a food chain and a food web?

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A food chain is a linear sequence of organisms through which nutrients and energy pass, while a food web is a complex network of interconnected food chains.

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What is primary productivity?

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Primary productivity is the rate at which energy is converted by photosynthetic and chemosynthetic autotrophs to organic substances.

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What is the significance of decomposers in an ecosystem?

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Decomposers break down dead organic matter, recycling nutrients back into the ecosystem.

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What is an ecological pyramid?

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An ecological pyramid is a graphical representation showing the relative amounts of energy or biomass at each trophic level in an ecosystem.